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News
Bureau of Labor Statistics

United States
Department
of Labor

Washington, D.C. 20212

Information:
(202) 691-6275 cbainfo@bls.gov
Media Contact: (202) 691-5902
Internet Address: http://www.bls.gov/cba/home.htm

USDL 07-0304
For Release: 10:00 A.M. EST
Tuesday, February 27, 2007

MAJOR WORK STOPPAGES IN 2006
Major work stoppages idled 70,000 workers with 2.7 million lost workdays in 2006, the U.S.
Department of Labor’s Bureau of Labor Statistics reported. The number of workers involved declined from
2005, but the number of workdays lost increased by an additional 1 million over the 2005 figure. The major
work stoppages series, which dates back to 1947, covers strikes and lockouts involving 1,000 or more
employees and lasting at least one shift. For work stoppages that began in 2005, only days of idleness in
calendar year 2006 are counted.

The total number of lockouts and strikes beginning in calendar year 2006 was 20. For 2005 there were
22 stoppages, with 1.7 million workdays of idleness involving 99,600 workers. (See table 1 and charts A-C).
Of the 20 major work stoppages beginning in 2006, 12 were in private industry and eight were in State and local
governments. In private industry, five work stoppages occurred in both manufacturing and construction, and
one stoppage each in janitorial services and automotive dealerships. Of the eight work stoppages in State and
local governments, four work stoppages involved municipal and county workers, two involved educational
services, and one each in public transportation and health care.

While the number of work stoppages and workers involved both declined from 2005 to 2006, the
number of lost workdays rose substantially, due to the length of some work stoppages. The mean length of a
work stoppage beginning in 2006 was 26.5 days, up from 20 days in 2005 and 14.6 days in 2004. The median
length of a work stoppage beginning in 2006 was 10 days, up from 6 days in 2005, and 5 days in 2004. Most
work stoppages are relatively short in duration, but the mean is influenced by several long work stoppages. The
longest work stoppage beginning in 2006 lasted 211 days and involved the AK Steel Corporation and the Armco
Employees Independent Federation.

The largest work stoppage in terms of idleness was between Northwest Airlines and the Aircraft
Mechanics Fraternal Association, with 812,100 workdays lost in 2006 and 1,183,800 workdays lost in total
since the work stoppage began on August 20, 2005. The second largest work stoppage in terms of idleness, and
the largest in terms of worker participation with 12,600 employees involved, was between the Goodyear Tire
and Rubber Company and the United Steelworkers of America, with 718,000 days idled in 2006.

Table A. Duration of work stoppages beginning in 2006, 2005, and 2004
Duration
2006
2005
2004
Number
Percent
Number
Percent
Number
Percent
1-2 days
5
25
4
18
3
18
3-10 days
6
30
8
36
6
35
11-20 days
5
25
5
23
2
12
21-30 days
1
5
1
5
1
6
31-40 days
1
5
1
5
2
12
41-50 days
0
0
0
0
0
0
>50 days
2
10
3
14
3
18
Note: Percent totals may not add to 100 because of rounding. The 2004 and 2005 numbers represent the total
duration of all work stoppages initiated during those respective years. The 2006 numbers represent work stoppages
initiated in 2006.

Table B. Number of work stoppages by the number of workers idled in 2006, 2005, and 2004
Number of workers
2006
2005
2004
idled
Number Percent Number
Percent
Number
Percent
1,000 to 1,999
10
50
11
50
6
35
2,000 to 2,999
2
10
5
23
3
18
3,000 to 4,999
3
15
2
9
2
12
5,000 to 7,499
2
10
2
9
3
18
7,500 to 9,999
2
10
0
0
0
0
10,000 to 14,999
1
5
0
0
1
6
15,000 to 19,999
0
0
1
5
1
6
20,000 or more
0
0
1
5
1
6
Note: Percent totals may not add to 100 because of rounding.

Table C. Number of work stoppages by number of work days idled in 2006, 2005, and 2004
Number of days of
2006
2005
2004
idleness
Number Percent
Number
Percent
Number
Percent
1,000 to 4,999
2
10
3
14
0
0
5,000 to 9,999
5
25
4
18
4
24
10,000 to 14,999
2
10
1
5
1
6
15,000 to 19,999
2
10
4
18
1
6
20,000 to 29,999
2
10
2
9
2
12
30,000 to 49,999
2
10
2
9
1
6
50,000 to 74,999
1
5
1
5
2
12
75,000 to 99,999
0
0
1
5
1
6
100,000 to 199,999
2
10
2
9
2
12
200,000 to 299,999
0
0
0
0
2
12
300,000 or more
2
10
2
9
1
6
Note: Percent totals may not add to 100 because of rounding. The 2004 and 2005 numbers represent the number
of work days idled of all work stoppages initiated during those respective years. The 2006 numbers represent work
stoppages initiated in 2006.
2

The term “major work stoppage” includes both worker-initiated strikes and employer-initiated lockouts
that involve 1,000 workers or more. BLS does not distinguish between lockouts and strikes in its statistics.
Information on work stoppages is obtained from reports from the Federal Mediation and Conciliation
Service, State labor market information offices, BLS Strike Reports from the Office of Employment and
Unemployment Statistics, and from media sources such as the Daily Labor Report and the Wall Street
Journal. One or both parties involved in the work stoppage (employer or union) is contacted to verify the
duration and number of workers idled by the stoppage.
Days of idleness is calculated by taking the number of workers involved in the strike or lock-out and
multiplying it by the number of days workers are off the job.
For detailed work stoppage statistics, please visit http://www.bls.gov/cba

3

Table 1. Work stoppages involving 1,000 or more workers, 1947-2006
Days idle2

Period

Number of
work
stoppages
beginning
in
period

2006 ............................................................
2005 ............................................................
2004 ............................................................
2003 ............................................................
2002 ............................................................

20
22
17
14
19

70
100
171
129
46

2,688
1,736
3,344
4,091
660

.01
.01
.01
.01
(4)

2001 ............................................................
2000 ............................................................
1999 ............................................................
1998 ............................................................
1997 ............................................................

29
39
17
34
29

99
394
73
387
339

1,151
20,419
1,996
5,116
4,497

(4)
.06
.01
.02
.01

1996 ............................................................
1995 ............................................................
1994 ............................................................
1993 ............................................................
1992 ............................................................

37
31
45
35
35

273
192
322
182
364

4,889
5,771
5,021
3,981
3,989

.02
.02
.02
.01
.01

1991 ............................................................
1990 ............................................................
1989 ............................................................
1988 ............................................................
1987 ............................................................

40
44
51
40
46

392
185
452
118
174

4,584
5,926
16,996
4,381
4,481

.02
.02
.07
.02
.02

1986 ............................................................
1985 ............................................................
1984 ............................................................
1983 ............................................................
1982 ............................................................

69
54
62
81
96

533
324
376
909
656

11,861
7,079
8,499
17,461
9,061

.05
.03
.04
.08
.04

1981 ............................................................
1980 ............................................................
1979 ............................................................
1978 ............................................................
1977 ............................................................

145
187
235
219
298

729
795
1,021
1,006
1,212

16,908
20,844
20,409
23,774
21,258

.07
.09
.09
.11
.10

1976 ............................................................
1975 ............................................................
1974 ............................................................
1973 ............................................................
1972 ............................................................

231
235
424
317
250

1,519
965
1,796
1,400
975

23,962
17,563
31,809
16,260
16,764

.12
.09
.16
.08
.09

1971 ............................................................
1970 ............................................................
1969 ............................................................
1968 ............................................................
1967 ............................................................

298
381
412
392
381

2,516
2,468
1,576
1,855
2,192

35,538
52,761
29,397
35,367
31,320

.19
.29
.16
.20
.18

1966 ............................................................
1965 ............................................................
1964 ............................................................
1963 ............................................................
1962 ............................................................

321
268
246
181
211

1,300
999
1,183
512
793

16,000
15,140
16,220
10,020
11,760

.10
.10
.11
.07
.08

1961 ............................................................
1960 ............................................................
1959 ............................................................
1958 ............................................................
1957 ............................................................

195
222
245
332
279

1,031
896
1,381
1,587
887

10,140
13,260
60,850
17,900
10,340

.07
.09
.43
.13
.07

See footnotes at end of table.

4

Numbers of
workers
involved
(thousands)1

Number
(thousands)

Percent of
estimated
working time3

Table 1. Work stoppages involving 1,000 or more workers, 1947-2006 — Continued
Days idle2

Period

Number of
work
stoppages
beginning
in
period

Numbers of
workers
involved
(thousands)1

Number
(thousands)

Percent of
estimated
working time3

1956 ............................................................
1955 ............................................................
1954 ............................................................
1953 ............................................................
1952 ............................................................

287
363
265
437
470

1,370
2,055
1,075
1,623
2,746

26,840
21,180
16,630
18,130
48,820

.20
.16
.13
.14
.38

1951 ............................................................
1950 ............................................................
1949 ............................................................
1948 ............................................................
1947 ............................................................

415
424
262
245
270

1,462
1,698
2,537
1,435
1,629

15,070
30,390
43,420
26,127
25,720

.12
.26
.38
.22
(5)

1 Number of workers involved includes only those
workers who participated in work stoppages that began in
the calendar year. Workers are counted more than once if
they are involved in more than one stoppage during the
reference period. Numbers are rounded to the nearest
thousand.
2 Days idle includes all stopages in effect during the
reference period. For work stoppages that are still ongoing
at the end of the calendar year, only those days of idleness
in the calendar year are counted.
3 Agricultural and government employees are included

in the calculation of estimated working time; private
households, forestry, and fishery employees are excluded.
4 Less than .005.
5 Data not available.
Note: "Number of workers involved" in Table 1 reflects a
tabulation of workers involved in a work stoppage that
began in a specific year. "Number of workers involved" in
Table 3 reflects a tabulation of all workers involved in a
work stoppage in that year without making the distinction of
when the work stoppage was initiated.

5

Table 2. Work stoppages involving 1,000 or more workers beginning in 2006 (listed by date stoppage began).
Industry
code1

Beginning
date

Ending
date

Sikorsky Aircraft Corp.
Stratford, CT, West Palm Beach, FL
International Brotherhood of Teamsters
Local 1150
Private Industry .........................................

336411

2/20/06

4/03/06

3,600

108,000

AK Steel Corp.
Middletown, OH
Armco Employees Independent
Federation
Private Industry .........................................

331111

3/01/06

(3)

2,3004

468,000

Santa Cruz County Government,
Santa Cruz, CA
Service Employees International
Union Local 415
Local Government ....................................

921190

3/14/06

3/15/06

1,600

1,600

Denver Regional Transportation District
Denver, CO
Amalgamated Transit Union
Local 1001
Local Government ....................................

485110

4/03/06

4/09/06

1,700

8,500

Greater Metropolitan Automotive Dealers
Association of Minnesota
Minneapolis, MN
International Brotherhood of Teamsters
Local 974
Private Industry .........................................

441110

4/17/06

5/09/06

1,400

23,800

General Building Contractors Association
(GBCA)
Philadelphia, PA
United Brotherhood of Carpenters
Metropolitan Regional Council of
Philadelphia
Private Industry .........................................

238350

5/01/06

5/02/06

5,000

5,000

MidAmerica Regional Bargaining
Association,
Chicago, IL,
Laborers International Union
Private Industry .........................................

237310

6/01/06

6/04/06

2,000

4,000

Mason Contractors Association and
Independent Employers,
St. Louis, MO and Vicinity
International Union of Bricklayers and
Allied Craftworkers
Private Industry .........................................

238140

6/01/06

6/08/06

1,200

7,200

Grove Masory Maintenance Inc.,
Tuckpointing Contractors Association
Chicago, IL
International Union of Bricklayers and
Allied Craftworkers
Private Industry .........................................

238140

6/12/06

6/17/06

1,600

8,000

Organizations involved
and location

See footnotes at end of table.

6

Number of
workers2

Days idle

Table 2. Work stoppages involving 1,000 or more workers beginning in 2006 (listed by date stoppage began). —
Continued
Industry
code1

Beginning
date

Ending
date

Contra Costa County
Danville, CA
Service Employees International Union
Local 535
The Association of Federal,
State and Municipal Employees
Locals 512 and 2700
Public Employees Local 1
The Western Council of Engineers,
Physicians and Dentists of
Contra Costa
Local Government ....................................

921100

6/27/06

6/28/06

6,000

6,000

General Contractors Association of Greater
New York
New York, NY
International Union of
Operating Engineers
Private Industry .........................................

237990

7/01/06

7/07/06

3,000

12,000

Gary School District
Gary, IN
Gary Teachers Union
Local Government ....................................

611110

8/21/06

9/01/06

1,400

14,000

City of Los Angeles, CA
Los Angeles, CA
The Engineers and Architects Association
Local Government ....................................

921100

8/22/06

8/23/06

7,500

15,000

Robert Wood Johnson University Hospital
New Brunswick, NJ
United Steelworkers Health Care
Workers Council, Local 4-200
Local Government ....................................

622110

8/24/06

9/21/06

1,200

24,000

Detroit School District
Detroit, MI
Detroit Federation of Teachers, Local 231
Local Government ....................................

611110

8/28/06

9/13/06

9,500

104,500

Sacramento County, CA
Sacramento, CA
Stationary Engineers Local 39
American Federation of State, County
and Municipal Employees
District Council 57
Local 146
United Public Employees Local 1
Local Government ....................................

921100

9/05/06

9/18/06

3,900

39,000

Bombardier Learjet
Wichita, KS
International Association of Machinists
Local 639
Private Industry .........................................

336411

10/02/06

10/23/06

1,100

16,500

Organizations involved
and location

See footnotes at end of table.

7

Number of
workers2

Days idle

Table 2. Work stoppages involving 1,000 or more workers beginning in 2006 (listed by date stoppage began). —
Continued
Industry
code1

Beginning
date

Ending
date

Number of
workers2

Days idle

Goodyear Tire and Rubber Co.
AL, NE, NY, NC, OH, KS, TN, TX, VA, WI
United Steelworkers
Private Industry .........................................

326210

10/06/06

12/29/06

12,600

718,200

ABM Janitorial Services, GCA Services
Group
Sanitors Services of Texas, Pritchard
Industries Southwest
Houston, TX
Service Employees International Union
Local 5
Private Industry .........................................

561720

10/23/06

11/20/06

1,300

26,000

Raytheon Missle Systems
Tucson, AZ
International Association of Machinists
Local 933
Private Industry .........................................

336414

11/06/06

(3)

1,900

70,300

Organizations involved
and location

1
2
3
4

Industry code is from the 2002 NAICS (North American Industry Classification System).
BLS rounds figures to the nearest 100. Companies and unions may have rounded the figures before providing them to BLS.
This work stoppage was still active as of December 31, 2006. All data presented are for the 2006 calendar year.
Work stoppage began with 2,600 workers in March 2006. It later decreased to 2,400 workers in April; 2,300 workers in July; 1,900 workers
in October; and 1,800 workers in November. Average number of workers is reported in the table.

8

Chart A. Number of major work stoppages in effect, by month, 2002-2006
Number of work stoppages
10

8

6

4

2

0
02

03

04

05

06

07

Chart B. Number of workers involved in major work stoppages in effect, by month, 2002-2006
Number of workers
(thousands)
120

100

80

60

40

20

0
02

03

04

05

06

07

Chart C. Number of days of idleness from major work stoppages in effect, by month, 2002-2006
Days of idleness
(thousands)
1,600
1,400
1,200
1,000
800
600
400
200
0
02

03

04

05

9

06

07

Chart D. Number of major work stoppages beginning in period, 1947-2006
Number of work stoppages
500

400

300

200

100

0
45

50

55

60

65

70

75

80

85

90

95

00

05

Chart E. Number of workers involved in major work stoppages beginning in period, 1947-2006
Number of workers
(thousands)
3,000

2,500

2,000

1,500

1,000

500

0
45

50

55

60

65

70

75

80

85

90

95

00

05

Chart F. Number of days of idleness from major work stoppages beginning in period, 1947-2006
Days of idleness
(thousands)
70,000
60,000
50,000
40,000
30,000
20,000
10,000
0
45

50

55

60

65

70

75

10

80

85

90

95

00

05